MatSTRUMPACKSetCompLossyPrecision

Set STRUMPACK https://portal.nersc.gov/project/sparse/strumpack/master precision for lossy compression, that is MAT_STRUMPACK_COMPRESSION_TYPE_LOSSY (requires ZFP support)

Synopsis

PetscErrorCode MatSTRUMPACKSetCompLossyPrecision(Mat F, PetscInt lossy_prec)

Logically Collective

Input Parameters

• F - the factored matrix obtained by calling MatGetFactor() from PETSc-STRUMPACK interface

• lossy_prec - Number of bitplanes to use in lossy compression

Options Database Key

• -mat_strumpack_compression_lossy_precision lossy_prec - Precision when using lossy compression [1-64], when using -pctype ilu -mat_strumpack_compression lossy

See Also

MATSOLVERSTRUMPACK, MatGetFactor(), MatSTRUMPACKGetCompLossyPrecision(), MAT_STRUMPACK_COMPRESSION_TYPE_LOSSY

Level

intermediate

Location

src/mat/impls/aij/mpi/strumpack/strumpack.c

Implementations

MatSTRUMPACKSetCompLossyPrecision_STRUMPACK() in src/mat/impls/aij/mpi/strumpack/impl/istrumpack.c

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